<template>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg">
      </div>
      <div slot="center" class="title">
        <div v-for="(item, index) in titles"
             :key="index"
             class="title-item"
             :class="{ active: index === currentIndex}"
             @click="titleClick(index)"
        >
          {{ item }}
        </div>
      </div>
    </nav-bar>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";

export default {
  name: "DetailNavBar",
  components: {NavBar},
  data() {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex : 0
    }
  },
  methods: {
    titleClick(index) {
      this.currentIndex = index;
      this.$emit('titleClick', index)
    },
    backClick() {
      // this.$router.back()
      this.$router.go(-1)
    }
  }
}
</script>

<style scoped>

.back img {
  /*margin-top: 12px;*/
  vertical-align: middle;
  width: 15px;
  height: 15px;
}
.title {
  display: flex;
  font-size: 13px;
}
.title-item {
  flex: 1;
}

.active {
  color: var(--color-high-text);
}
</style>
